Photoengraver&#39;s glass dipping rack



1,902, 3 c. E. RILEY 1 193 March 2 "y(a(ma(((amamaq IIIIIIIIIIIIIIIII u rigidly Patented Mar. 21, 1933 PATENT OFFICE UNITED- STATES a. ma or soon; nsanmu, clmrrozania rnoronncnavan's crass mrrnm Application fled October 31, 1980. amino. 490,157.

This invention consists in the provision of means adapted for use in cleansing glam plates preparatory to making negatives or positives for use in the photo-engraving art.

Itis necessary to cleanse such plates prior to coating them with the sensitive solution, and it is customary to eifect such cleansing by lacin the plates, one upon another in a bat of nitric acid; and then removing the lates one by one for drying and for use.

uch work is tedious and slow and likely to cause the operator to burn and discolor his hands with the acid, and is also inconvenient and accompanied by frequent breakage of lates.

object of this invention is to avoid the inconvenience, injury and loss heretofore common to the work of washing glass plates with acid or other cleansing liquids.

The invention broadly includes a crate comprisinga head grooved on its under face, a floor grooved on its upper face, a frame holding the head s aced above the floor with the ooves of the oor and head in parallelism elow and'above a plate aocommodatin g s ace, to hold the lower and upper edges 0 t e lates to be washed, and means for han 'ng the crate.

' An object of the invention is to provide a ii ht, simple, rigid and strong metallic crate adapted to the purpose; and with this object in view, I have produced grooved pla ues, each comprising slat 'stampings secure to gether b wire and arranged so that the wire olds such plaques in parallelism,

. one above the other, and form the wire-into loops extending above the top plaque to unitedly serve as a bail by which the crate and its load of plates can be lifted and handled.

With a view to convenience of construction, I form the wire into four sections and apply an intermediate length fof each section as a cross-bar, there being thus formed, four 5 cross-bars which are threaded through theirrespective ends of the plaques; other por-' tions of such wire sections being arranged as 7 frame standards, braces and 100 s, to comlete the frame, and I also provi e side bars 6 or each plaque and secure the same in place by portions of the wire sections threaded therethrough.

An object is to provide a light, strong,- rigid rack having plate holdin grooves open at one end so as to allow the g as plates to be shoved into the rack at one end, to

so construct the rack that the frame at the; other end of the rack will form a stop for the plates, but will leave such other end of the plate free to be pushed upon by the operator, for sliding the plates out of the receiving ends of their grooves respectivelyo An advantage is that the glass plates are held u right, free from face contact with each at er so that the cleansing liquid of the bath has direct and free contact with the entire plate surface on both sides, thus insnring perfect cleansing.

Another advantage is that by the arrangement allowing the plates to he slid into an out of the grooves free from iface contact with each other, t e dan er of scratchin the faces of the plates an of breakage cornersof the glass, is

The accompanying drawing illustrates the invention.

Figure 1. is a' perspective view of a plate dipping rack made in accordance with this invention and readg graphic glasses for p Fig. 2 is a perspective view of the slatholding frame disassembled.

Fi 3 is a fragmentary detail of one of the oor slats detached.

Fig. 4 is a fragmentary view of a stampin for makingrone of the slats.

ig. 5 isa agmentary end view of the to receive photoping and cleansing.

I dippin rack shown in Fig. 1; fragments of three p otographic glass plates being shown in lace.

ig. 6 is a fra entary side elevation of one of the floor ats;

Fig. 7 is a fra mentary side elevation of one of the head s ats. I It is understood the floor slats and head slats are all alike.

-The floor 1 and head 2 are rooved plaque-like bodies shown as assem led of' where a runner and a rib are united at a right angle to constitute the angle bars in each of which the runner ends extend in curls 0n the side of the runner opposite to the rib so as to constitute hubs through which the cross-bars extend. The slats 3 of the floor, are thus strung on the crossbars 4, 5, and the slats 3 of the head are strung on the cross-bars 6, 7.

The floor is provided with side bars 8, 9, through which the floor cr0ss-bars4, 5, are exten ed, and the head has side bars 10 and 11 throu h which the cross-bars 6, 7 extend.

The si e bars and slats of the oor are thus united by the cross-bars 4, 5, and the side bars and slats of the head are secured together by the head cross-bars 6, 7.

.baid cross-bars 4, 5, 6, 7, are parts of a wire skeleton frame formed of four bent wire sections 13, 14, 15, 16.

The end, brace section 13 comprises the floor cross-bar 4, the upright standards a and b and the diagonal end brace 0. The U section 14 comprises the floor cross-bar 5 and two uprights d, e.

The diagonal longitudinal U brace section 15 com rises the head cross-bar 7 and the lon 'tu inal diagonal braces f and 9;

he first floor side bar 8 is provided at one end with three holes 4, a and f, that form seats to accommodate the cross-bar 4, and the hook ends of the cross and side stays a and f; and said side bar 8 is provided at the other end with only one hole 5', through which hole the second floor cross-bar 5 extends.

The second floor side bar9 is provided at one end with two holes I) and g for the cross-bar 4 and the hook h of the diagonal side stay 9, and is provided at the'further end with the hole e' for the cross-bar 5.

The head side bar 10 has at one end two holes a and 6 to respectively seat the hook a" of the standard a and the head cross-bar 6, and isproyided at its further end with 1,eoa,sas

standard 6 and end brace c; and has at its further end the three holes 21, 22 and 23 to seat the cross-bar 7 the book 24 of the upright e and the hoo 25 of the loop member 26 of the bail 17.

The slats for the floor and the head are alike and iii practice the stampings shown through which the cross-bars will be strung in the course of assembly.

The frame sections 13, 14, 15, and 16 are pieces of liable and malleable wire of a suitable aracter resistant to erosion of nitric acid, and are threaded through, and bent to the side bars as .shown and in a manner that will be readily understood by one skilled in the wire working art.

The hock ends of the wire sections afford a convenient means of fixin the ends of the sections to their seats to w ich they are secured, but it is understood that weldin brazing or soldering may be employed wi in the knowledge of the workman, without de arting from the s irit of the invention.

11 practical use, t e operator will insert the p ates in the a propriate groove pairs and will then lift t e loaded crate from its support, not shown, and dip it] into the cleansing bath and when the cleansing has been completed, will dip the crate in a rinsing bath of clear water and will then lift the crate and its load of cleansed plates to a support, and the plates are removed one by one at the 0 end 31 of the crate, and coated with al umen while wet, and will then be set aside to'dry and to be coated with the film as needed.

The upwardly extending wire loops 17 and 19 are bent over the top member or head 2 so as to be readily grasped by the fingers of one hand, and both loops being formed of a e le wire, the middle of which forms the crossr at one end of the head, while the outer ends of such wire are hooked to the other end of the head the crate is securel supported by the bail for handling the load ed crate.

I claim i i 1. The combination with slats comprising ribs and runners provided with hubs, of cross-bars extending through the hubs to hold the slats together to form a grooved member of a plate hold rack.

2. The combination with slats and side bars, of four sections of wire, each provided with hooks at its ends for engaging two side bars, and form' cross-bars between such side bars; the si e barsand slats being provided with orifieesv and the crossbars being strung through the orifices to hold the bars and slats together, some to form a floor and others to form a head; the I slats being provided with ribs and runners to form ooved ways for the floor and head; interme iate portions of the wire sections extending between the floor and head to space the floor and head apart; and loops 10 being formed inQone of the wire sections to form a bail for handling the crate.

3. In 'a glass holding crate comprising slats formed of ribs and runners, a wire threaded through the slats and bent to form 16 parts of the crateframe.

In testimon whereof, I have hereunto set my hand at 0s Angeles, California, this 14th day of October, 1930.

CLARENCE E. RILEY. 

